vf_colorconstancy.c File Reference

Color Constancy filter. More...

#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
#include <math.h>

Classes
struct	ThreadData
	Used for passing data between threads. More...
struct	ColorConstancyContext
	Common struct for all algorithms contexts. More...

Macros
#define	GREY_EDGE   "greyedge"
#define	SQRT3   1.73205080757
#define	NUM_PLANES   3
#define	MAX_DIFF_ORD   2
#define	MAX_META_DATA   4
#define	MAX_DATA   4
#define	INDEX_TEMP   0
#define	INDEX_DX   1
#define	INDEX_DY   2
#define	INDEX_DXY   3
#define	INDEX_NORM   INDEX_DX
#define	INDEX_SRC   0
#define	INDEX_DST   1
#define	INDEX_ORD   2
#define	INDEX_DIR   3
#define	DIR_X   0
#define	DIR_Y   1
#define	OFFSET(x)   offsetof(ColorConstancyContext, x)
#define	FLAGS   AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
#define	GINDX(s, i)   ( (i) - ((s) >> 2) )
#define	CLAMP(x, mx)   av_clip((x), 0, (mx-1))
#define	INDX2D(r, c, w)   ( (r) * (w) + (c) )
#define	GAUSS(s, sr, sc, sls, sh, sw, g)   ( (s)[ INDX2D(CLAMP((sr), (sh)), CLAMP((sc), (sw)), (sls)) ] * (g) )

Typedefs
typedef struct ThreadData	ThreadData
	Used for passing data between threads.
typedef struct ColorConstancyContext	ColorConstancyContext
	Common struct for all algorithms contexts.

Detailed Description

Color Constancy filter.

See also

http://colorconstancy.com/

[J]. van de Weijer, Th. Gevers, A. Gijsenij "Edge-Based Color Constancy".